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Dispensing of quantum information beyond no-broadcasting theorem-is it possible to broadcast anything genuinely quantum?




TekijätHeinosaari Teiko, Jenčová Anna, Plávala Martin

KustantajaIOP Publishing Ltd

Julkaisuvuosi2023

JournalJournal of Physics A: Mathematical and Theoretical

Tietokannassa oleva lehden nimiJOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

Lehden akronyymiJ PHYS A-MATH THEOR

Artikkelin numero 135301

Vuosikerta56

Numero13

Sivujen määrä20

ISSN1751-8113

eISSN1751-8121

DOIhttps://doi.org/10.1088/1751-8121/acbc5b

Rinnakkaistallenteen osoitehttps://research.utu.fi/converis/portal/detail/Publication/179380228


Tiivistelmä

No-broadcasting theorem is one of the most fundamental results in quantum information theory; it guarantees that the simplest attacks on any quantum protocol, based on eavesdropping and copying of quantum information, are impossible. Due to the fundamental importance of the no-broadcasting theorem, it is essential to understand the exact boundaries of this limitation. We generalize the standard definition of broadcasting by restricting the set of states which we want to broadcast and restricting the sets of measurements which we use to test the broadcasting. We show that in some of the investigated cases broadcasting is equivalent to commutativity, while in other cases commutativity is not necessary.


Ladattava julkaisu

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Last updated on 2024-26-11 at 20:01